From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EAF08C433E1 for ; Tue, 30 Jun 2020 12:36:04 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BB6EE20774 for ; Tue, 30 Jun 2020 12:36:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BB6EE20774 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=cert.pl Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqFUN-0008AE-3H; Tue, 30 Jun 2020 12:35:51 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqFUL-00084T-Fq for xen-devel@lists.xenproject.org; Tue, 30 Jun 2020 12:35:49 +0000 X-Inumbo-ID: 386884e2-bace-11ea-8496-bc764e2007e4 Received: from bagnar.nask.net.pl (unknown [195.187.242.196]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 386884e2-bace-11ea-8496-bc764e2007e4; Tue, 30 Jun 2020 12:35:46 +0000 (UTC) Received: from bagnar.nask.net.pl (unknown [172.16.9.10]) by bagnar.nask.net.pl (Postfix) with ESMTP id C9722A3808; Tue, 30 Jun 2020 14:35:45 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by bagnar.nask.net.pl (Postfix) with ESMTP id C6F14A380A; Tue, 30 Jun 2020 14:35:44 +0200 (CEST) X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" Received: from bagnar.nask.net.pl ([127.0.0.1]) by localhost (bagnar.nask.net.pl [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id FQulLJynH1yD; Tue, 30 Jun 2020 14:35:43 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by bagnar.nask.net.pl (Postfix) with ESMTP id 23389A3807; Tue, 30 Jun 2020 14:35:43 +0200 (CEST) X-Virus-Scanned: amavisd-new at bagnar.nask.net.pl X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" Received: from bagnar.nask.net.pl ([127.0.0.1]) by localhost (bagnar.nask.net.pl [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id WizpvhWplQ1k; Tue, 30 Jun 2020 14:35:43 +0200 (CEST) Received: from belindir.nask.net.pl (belindir-ext.nask.net.pl [195.187.242.210]) by bagnar.nask.net.pl (Postfix) with ESMTP id F3578A3801; Tue, 30 Jun 2020 14:35:42 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by belindir.nask.net.pl (Postfix) with ESMTP id 2655C2231C; Tue, 30 Jun 2020 14:34:50 +0200 (CEST) X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" Received: from belindir.nask.net.pl ([127.0.0.1]) by localhost (belindir.nask.net.pl [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id m9xyphjmeEWn; Tue, 30 Jun 2020 14:34:43 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by belindir.nask.net.pl (Postfix) with ESMTP id 7701E22606; Tue, 30 Jun 2020 14:34:43 +0200 (CEST) X-Quarantine-ID: X-Virus-Scanned: amavisd-new at belindir.nask.net.pl X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" Received: from belindir.nask.net.pl ([127.0.0.1]) by localhost (belindir.nask.net.pl [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id Ecl5c91OY5f7; Tue, 30 Jun 2020 14:34:43 +0200 (CEST) Received: from mq-desktop.cert.pl (unknown [195.187.238.217]) by belindir.nask.net.pl (Postfix) with ESMTPSA id 5067F225E6; Tue, 30 Jun 2020 14:34:43 +0200 (CEST) From: =?UTF-8?q?Micha=C5=82=20Leszczy=C5=84ski?= To: xen-devel@lists.xenproject.org Subject: [PATCH v4 10/10] tools/proctrace: add proctrace tool Date: Tue, 30 Jun 2020 14:33:53 +0200 Message-Id: <0ab003238e4e666d3847024b8917dbc11c40fecb.1593519420.git.michal.leszczynski@cert.pl> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: MIME-Version: 1.0 In-Reply-To: References: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: tamas.lengyel@intel.com, Michal Leszczynski , luwei.kang@intel.com, Ian Jackson , Wei Liu Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" From: Michal Leszczynski Add an demonstration tool that uses xc_vmtrace_* calls in order to manage external IPT monitoring for DomU. Signed-off-by: Michal Leszczynski --- tools/proctrace/COPYING | 339 ++++++++++++++++++++++++++++++++++++ tools/proctrace/Makefile | 48 +++++ tools/proctrace/proctrace.c | 163 +++++++++++++++++ 3 files changed, 550 insertions(+) create mode 100644 tools/proctrace/COPYING create mode 100644 tools/proctrace/Makefile create mode 100644 tools/proctrace/proctrace.c diff --git a/tools/proctrace/COPYING b/tools/proctrace/COPYING new file mode 100644 index 0000000000..c0a841112c --- /dev/null +++ b/tools/proctrace/COPYING @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-130= 7 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + + b) You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + + c) If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. (Exception: if the Program itself is interactive but + does not normally print such an announcement, your work based on + the Program is not required to print an announcement.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it= . + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. + +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + a) Accompany it with the complete corresponding machine-readable + source code, which must be distributed under the terms of Sections + 1 and 2 above on a medium customarily used for software interchange;= or, + + b) Accompany it with a written offer, valid for at least three + years, to give any third party, for a charge no more than your + cost of physically performing source distribution, a complete + machine-readable copy of the corresponding source code, to be + distributed under the terms of Sections 1 and 2 above on a medium + customarily used for software interchange; or, + + c) Accompany it with the information you received as to the offer + to distribute corresponding source code. (This alternative is + allowed only for noncommercial distribution and only if you + received the program in object code or executable form with such + an offer, in accord with Subsection b above.) + +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. However, as a +special exception, the source code distributed need not include +anything that is normally distributed (in either source or binary +form) with the major components (compiler, kernel, and so on) of the +operating system on which the executable runs, unless that component +itself accompanies the executable. + +If distribution of executable or object code is made by offering +access to copy from a designated place, then offering equivalent +access to copy the source code from the same place counts as +distribution of the source code, even though third parties are not +compelled to copy the source along with the object code. + + 4. You may not copy, modify, sublicense, or distribute the Program +except as expressly provided under this License. Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + + 5. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + + 6. Each time you redistribute the Program (or any work based on the +Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + + 7. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Program at all. For example, if a patent +license would not permit royalty-free redistribution of the Program by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Program. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 8. If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + + 9. The Free Software Foundation may publish revised and/or new version= s +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and condition= s +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number o= f +this License, you may choose any version ever published by the Free Soft= ware +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the autho= r +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software an= d +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRAN= TY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS= ED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK A= S +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRIT= ING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGE= S, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARIS= ING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITE= D +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTH= ER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these ter= ms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; If not, see . + + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `sho= w w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropri= ate +parts of the General Public License. Of course, the commands you use ma= y +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacke= r. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program i= nto +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with = the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/tools/proctrace/Makefile b/tools/proctrace/Makefile new file mode 100644 index 0000000000..2983c477fe --- /dev/null +++ b/tools/proctrace/Makefile @@ -0,0 +1,48 @@ +# Copyright (C) CERT Polska - NASK PIB +# Author: Micha=C5=82 Leszczy=C5=84ski +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; under version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +XEN_ROOT=3D$(CURDIR)/../.. +include $(XEN_ROOT)/tools/Rules.mk + +CFLAGS +=3D -Werror +CFLAGS +=3D $(CFLAGS_libxenevtchn) +CFLAGS +=3D $(CFLAGS_libxenctrl) +LDLIBS +=3D $(LDLIBS_libxenctrl) +LDLIBS +=3D $(LDLIBS_libxenevtchn) +LDLIBS +=3D $(LDLIBS_libxenforeignmemory) + +.PHONY: all +all: build + +.PHONY: build +build: proctrace + +.PHONY: install +install: build + $(INSTALL_DIR) $(DESTDIR)$(sbindir) + $(INSTALL_PROG) proctrace $(DESTDIR)$(sbindir)/proctrace + +.PHONY: uninstall +uninstall: + rm -f $(DESTDIR)$(sbindir)/proctrace + +.PHONY: clean +clean: + $(RM) -f $(DEPS_RM) + +.PHONY: distclean +distclean: clean + +iptlive: iptlive.o Makefile + $(CC) $(LDFLAGS) $< -o $@ $(LDLIBS) $(APPEND_LDFLAGS) + +-include $(DEPS_INCLUDE) diff --git a/tools/proctrace/proctrace.c b/tools/proctrace/proctrace.c new file mode 100644 index 0000000000..22bf91db8d --- /dev/null +++ b/tools/proctrace/proctrace.c @@ -0,0 +1,163 @@ +/***********************************************************************= ******* + * tools/proctrace.c + * + * Demonstrative tool for collecting Intel Processor Trace data from Xen= . + * Could be used to externally monitor a given vCPU in given DomU. + * + * Copyright (C) 2020 by CERT Polska - NASK PIB + * + * Authors: Micha=C5=82 Leszczy=C5=84ski, michal.leszczynski@cert.pl + * Date: June, 2020 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; under version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; If not, see . + */ + +#include +#include +#include +#include + +#include +#include +#include + +#define BUF_SIZE (16384 * XC_PAGE_SIZE) + +volatile int interrupted =3D 0; + +void term_handler(int signum) { + interrupted =3D 1; +} + +int main(int argc, char* argv[]) { + xc_interface *xc; + uint32_t domid; + uint32_t vcpu_id; + + int rc =3D -1; + uint8_t *buf =3D NULL; + uint64_t last_offset =3D 0; + + xenforeignmemory_handle *fmem; + xenforeignmemory_resource_handle *fres; + + if (signal(SIGINT, term_handler) =3D=3D SIG_ERR) + { + fprintf(stderr, "Failed to register signal handler\n"); + return 1; + } + + if (argc !=3D 3) { + fprintf(stderr, "Usage: %s \n", argv[0]); + fprintf(stderr, "It's recommended to redirect this" + "program's output to file\n"); + fprintf(stderr, "or to pipe it's output to xxd or other program.= \n"); + return 1; + } + + domid =3D atoi(argv[1]); + vcpu_id =3D atoi(argv[2]); + + xc =3D xc_interface_open(0, 0, 0); + + fmem =3D xenforeignmemory_open(0, 0); + + if (!xc) { + fprintf(stderr, "Failed to open xc interface\n"); + return 1; + } + + rc =3D xc_vmtrace_pt_enable(xc, domid, vcpu_id); + + if (rc) { + fprintf(stderr, "Failed to call xc_vmtrace_pt_enable\n"); + return 1; + } + + fres =3D xenforeignmemory_map_resource( + fmem, domid, XENMEM_resource_vmtrace_buf, + /* vcpu: */ vcpu_id, + /* frame: */ 0, + /* num_frames: */ BUF_SIZE >> XC_PAGE_SHIFT, + (void **)&buf, + PROT_READ, 0); + + if (!buf) { + fprintf(stderr, "Failed to map trace buffer\n"); + return 1; + } + + while (!interrupted) { + uint64_t offset; + rc =3D xc_vmtrace_pt_get_offset(xc, domid, vcpu_id, &offset); + + if (rc) { + fprintf(stderr, "Failed to call xc_vmtrace_pt_get_offset\n")= ; + return 1; + } + + if (offset > last_offset) + { + fwrite(buf + last_offset, offset - last_offset, 1, stdout); + } + else if (offset < last_offset) + { + // buffer wrapped + fwrite(buf + last_offset, BUF_SIZE - last_offset, 1, stdout)= ; + fwrite(buf, offset, 1, stdout); + } + + last_offset =3D offset; + usleep(1000 * 100); + } + + rc =3D xenforeignmemory_unmap_resource(fmem, fres); + + if (rc) { + fprintf(stderr, "Failed to unmap resource\n"); + return 1; + } + + rc =3D xenforeignmemory_close(fmem); + + if (rc) { + fprintf(stderr, "Failed to close fmem\n"); + return 1; + } + + rc =3D xc_vmtrace_pt_disable(xc, domid, vcpu_id); + + if (rc) { + fprintf(stderr, "Failed to call xc_vmtrace_pt_disable\n"); + return 1; + } + + rc =3D xc_interface_close(xc); + + if (rc) { + fprintf(stderr, "Failed to close xc interface\n"); + return 1; + } + + return 0; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ --=20 2.20.1